DTC C124A-05: ECM Communication System Programming Failure [11/2021 - 10/2023]: Description

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
C124A-05	ECM Communication System Programming Failure	When the vehicle speed is 40 km/h (25 mph) or more, one of the following conditions is met: The engine type, powertrain variation and destination information sent from the hybrid vehicle control ECU assembly do not match the information stored in the No. 2 skid control ECU (brake actuator assembly). No system information stored in the No. 2 skid control ECU (brake actuator assembly).	Incorrect hybrid vehicle control ECU assembly installed No. 2 skid control ECU (brake actuator assembly)	Comes on	SAE Code: C124A Output ECU: No. 2 skid control ECU (brake actuator assembly)

C124A-05 DTC DETECTION CONDITIONS

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	When the vehicle speed is 40 km/h (25 mph) or more	◦	◦
Malfunction Status	The engine type, powertrain variation and destination information sent from the hybrid vehicle control ECU assembly do not match the information stored in the No. 2 skid control ECU (brake actuator assembly)	◦	-
Malfunction Status	No system information stored in the No. 2 skid control ECU (brake actuator assembly)	-	◦
Detection Time		-	-
Number of Trips		1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.